/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.pipeline.lib.io;

import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.PathMatcher;

public class WildcardFilter implements DirectoryStream.Filter<Path> {
  private PathMatcher fileMatcher;

  private WildcardFilter(String pattern) {
    fileMatcher = FileSystems.getDefault().getPathMatcher(pattern);
  }

  public static DirectoryStream.Filter<Path> createGlob(String glob) {
    return new WildcardFilter("glob:" + glob);
  }

  public static DirectoryStream.Filter<Path> createRegex(String regex) {
    return new WildcardFilter("regex:" + regex);
  }

  @Override
  public boolean accept(Path entry) throws IOException {
    return fileMatcher.matches(entry.getFileName());
  }

}
